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Xue S, Seo K, Yang M, Cui C, Yang M, Xiang S, Yan Z, Wu S, Han J, Yu X, Li Y, Jin X. Mycoplasma suis Alpha-Enolase Subunit Vaccine Induces an Immune Response in Experimental Animals. Vaccines (Basel) 2021; 9:vaccines9121506. [PMID: 34960252 PMCID: PMC8708218 DOI: 10.3390/vaccines9121506] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 12/14/2021] [Accepted: 12/15/2021] [Indexed: 11/16/2022] Open
Abstract
Recombinant protein technology has emerged as an excellent option for vaccine development. However, prior to our study, the immune induction ability of recombinant Mycoplasma suis alpha-enolase (rMseno) in animals remained unclear. The purpose of this study was to develop a rMseno protein subunit vaccine and to determine its ability to elicit an immunological response. To accomplish this, we cloned the gene into pET-15b, expressed it in BL21 cells, and purified it. Following the establishment of immunity, the immunogenicity and potential for protection of rMseno were evaluated in mice and piglets. The results demonstrate that anti-M. suis serum recognized the pure rMseno protein in both mice and piglets as evidenced by high levels of specific anti-rMseno antibodies, significantly increased levels of IFN-γ and IL-4 cytokines, and significantly increased T lymphocyte proliferation index. Piglets also had significantly increased levels of specific IgG1, IgG2a, CD4+, and CD8+ cells. The rMseno findings demonstrated a robust immunological response in mice and piglets, affording partial clinical protective efficacy in piglets.
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Affiliation(s)
- Shujiang Xue
- Department of Veterinary Medicine, College of Agriculture, Yanbian University, Yanji 133002, China; (S.X.); (C.C.); (S.X.); (Z.Y.); (S.W.); (J.H.); (X.Y.)
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China
| | - Kangseok Seo
- Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea;
| | - Miaosen Yang
- Department of Chemistry, Northeast Electric Power University, Jilin 132011, China;
| | - Chengdu Cui
- Department of Veterinary Medicine, College of Agriculture, Yanbian University, Yanji 133002, China; (S.X.); (C.C.); (S.X.); (Z.Y.); (S.W.); (J.H.); (X.Y.)
| | - Meng Yang
- Department of Pharmacy, Jiangsu Food & Pharmaceutical Science College, Huai’an 223023, China;
| | - Siyu Xiang
- Department of Veterinary Medicine, College of Agriculture, Yanbian University, Yanji 133002, China; (S.X.); (C.C.); (S.X.); (Z.Y.); (S.W.); (J.H.); (X.Y.)
| | - Zongbin Yan
- Department of Veterinary Medicine, College of Agriculture, Yanbian University, Yanji 133002, China; (S.X.); (C.C.); (S.X.); (Z.Y.); (S.W.); (J.H.); (X.Y.)
| | - Shengjun Wu
- Department of Veterinary Medicine, College of Agriculture, Yanbian University, Yanji 133002, China; (S.X.); (C.C.); (S.X.); (Z.Y.); (S.W.); (J.H.); (X.Y.)
| | - Jincheng Han
- Department of Veterinary Medicine, College of Agriculture, Yanbian University, Yanji 133002, China; (S.X.); (C.C.); (S.X.); (Z.Y.); (S.W.); (J.H.); (X.Y.)
| | - Xiaoyang Yu
- Department of Veterinary Medicine, College of Agriculture, Yanbian University, Yanji 133002, China; (S.X.); (C.C.); (S.X.); (Z.Y.); (S.W.); (J.H.); (X.Y.)
| | - Yunxiao Li
- School of Life Science, Shandong University, Qingdao 266237, China
- Correspondence: (Y.L.); (X.J.); Tel.: +86-043-3243-5550 (X.J.)
| | - Xin Jin
- Department of Veterinary Medicine, College of Agriculture, Yanbian University, Yanji 133002, China; (S.X.); (C.C.); (S.X.); (Z.Y.); (S.W.); (J.H.); (X.Y.)
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China
- Correspondence: (Y.L.); (X.J.); Tel.: +86-043-3243-5550 (X.J.)
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Quantitative analysis of Mycoplasma wenyonii and 'Candidatus Mycoplasma haemobos" infections in cattle using novel gapN-based realtime PCR assays. Vet Microbiol 2018; 220:1-6. [PMID: 29885793 DOI: 10.1016/j.vetmic.2018.04.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 04/14/2018] [Accepted: 04/20/2018] [Indexed: 11/24/2022]
Abstract
Hemotrophic mycoplasmas (HMs) are associated with anemia and other disease complexes in a wide range of livestock and wild animals. Two bovine HM species have been identified to date, i.e. Mycoplasma wenyonii and 'Candidatus Mycoplasma haemobos'. The study aim was to develop quantitative real-time PCR assays (qPCRs) to detect and quantify M. wenyonii and 'C. M. haemobos' and to apply these assays to DNA samples extracted from bovine blood collected in Germany (n = 220) from 22 herds. The qPCR assays specific for M. wenyonii and 'C. M. haemobos' were designed using the gapN of the respective hemoplasma species as gene target which encodes the NADP-dependent glyceraldehyde 3-phosphate dehydrogenases (GAPN). The sensitivity of both assays was 10 genome equivalents per reaction, corresponding to 2500 genome equivalents per ml blood. No cross-reactivity with non-target bovine HMs. and other bovine pathogens was observed. Bovine HM DNA was detected in 137 samples (62.27%) with 118 samples (53.64%) being positive for 'C.M. haemobos' and 19 samples (8.64%) being positive for M. wenyonii. Thereof, 11 animals (5.00%) were co-infected with both bovine HM species. The found herd prevalence for `C. M. haemobos` was 100.00%, and for M. wenyonii 36.36% with mean bacterial loads of 3.7 × 107 `C. M. haemobos`/mL blood and of 4.29 × 105M. wenyonii/mL blood respectively. Clinical and economic relevance of bovine HM species should be goal of future studies for which the novel gapN qPCR assays can serve as a valuable diagnostic tool.
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